$fname = "demo";
// build object
$a = new a();
$a->set_id('dsdsdsdsdsdsds123123');
$a->set_clientname('atestclient');
for ($i = 0; $i < 10000; $i++) {
$b = $a->add_conf();
$b->set_query('this is a query');
unset($b);
}
// remove first item
//var_dump($a->conf_size());
//$a->set_conf(0, $a->conf($a->conf_size() - 1));
//$a->remove_last_conf();
//var_dump($a->conf_size());
$content = $a->SerializeToString();
$fhandle = fopen($fname, "wb");
fwrite($fhandle, $content);
fclose($fhandle);
unset($content);
unset($fhandle);
//$a->__destruct();
unset($a);
gc_collect_cycles();
//exit;
$cnt = 0;
print "<br>MEMORY BEFOR:" . memory_get_usage() . "<br>\n";
while (true) {
$cnt++;
$fhandle = fopen($fname, "rb");
$content = fread($fhandle, filesize($fname));